Supposedly GE is making a lot of this stuff according to other forums, including AGA.

The Wacker (pronounced "vacker) stuff is supposed to be outstanding but is not available in retail anymore, at least not in the states. Too bad because I scored one cartridge in black and I needed a few more to finish my project.

Perennator is German like Wacker and is available in the states but is expensive. I hear it too is a very good product.

Feeder Fish

I've used the DAP silicone for all 3 tanks and the w/d I built over the last few months. It is very easy to work with and I haven't had a problem with it yet. Unfortunately, I don't have any info for long term.

Black Skirt Tetra

I've used the DAP silicone for all 3 tanks and the w/d I built over the last few months. It is very easy to work with and I haven't had a problem with it yet. Unfortunately, I don't have any info for long term.